evaluating sdbd. crown & bridge downbearings in a new piano

[Ron Nossaman]

>I have rebuilt a lot of old Knabes.  I'm rebuilding a 1910 now.  I have
>never encountered one with a crowned rib.  

>Frank Weston



Incidentally, how did you ascertain this? I'd sure like to know how to tell
for sure.

 Ron N